Abstract
In this study, the optimum shape for a water-cooled mini-channel heat sink was proposed by incorporating three-dimensional simulations of fluid flow and a multi-objective optimisation algorithm. The configuration of a mini-channel along its length was specified by thirteen coordinate points and the multi-objective genetic algorithm (MOGA) was used to find the optimal solution. The optimum point had the least overall heat transfer resistance as well as pumping power. Later, the optimum choice among the non-inferior points was proposed using linear programming techniques for multidimensional analysis of preference (LINMAP). It was shown that the LINMAP solution reduced thermal resistance to 87% of a straight channel by only a 10% increase in pumping power. The result was also compared with a fully wavy channel. It was shown that although the thermal resistance value in a fully wavy channel was better, it required a really high pumping power to access such thermal resistance.
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